Thermostatic control for oil burners



June 23, 1925.

w. E. SHORE THERMOSTATIC CONTROL FOR OIL BURNERS Filed July 51 1922 III 1 2) '1!) ventor Patented June 23, 1925.

UNITED STATES,

PATENT OFFICE.

WILLIAM E. SHORE, OF NEW YORK, N. Y.

THERMOSTATIC CONTROL FOR OIL BUBNERS.

Application filed July 31, 1922. Serial No. 578,648.

' cation and illustrated in the accompanying drawings, that form part of the same.

The principal objects of this invention are, to effect a positive control of a supply of fuel to a burner, whereby the operation of the supply will be completely suspended in the event of the flame being'extinguished.

A further object is to devise a control which may be interposed direct-1y into the path of the flame from the burner, and further to provide means for maintaining a continuous circulation of a heat distributing fluid through the portion of the device subjected to the flames.

'The principal feature of the invention consists in the arrangement of a tubular conduit connected with a thermostatic con trol in the path of the flame emanating from a burner and connecting said conduit with a fluid supply in such a manner that a continuous circulation of fluid may be maintained therethrough.

The drawing is an elevational view of a heating plant showing the application of my invention thereto.

In the form of the device illustrated herein aboiler 1 is shown arranged above a firebox 2 and a circular air register 3 is arranged in front of the opening l. \Vithin the register 3 is supported the burner 5 which is connected to the fuel supply tube 6 leading to the fuel supply mechanism. The burner projects a flame into the fire-box beneath the boiler 1.

A conduit is formed by an arrangement of pipes formed into a loop 8 arranged within the fire-box in alignment with the vertical centre line of the register so that the flame from the burner impinges directly uponthe loop, imparting thereto the full heat of the flame. The lower end. of the loop is connected by a branch pipe 9 to the boiler 1 at a point adjacent to its bottom and the upper end is connected by a pipe 10 to the front of tpe boiler at a point close to high water leve The heat of the flame impinging against the loop 8 heats the water in said loop causing it to travel upwardly and discharge through the pipe 10 into the boiler drawing a cooler supply through the pipe 9 to the bottom out the loop.

This system of fluid circulation through a pipe interposed in the path of the flame from the burner ensures the maintenance of a constant temperature of fluid in the pipe when the burner is projecting a flame but if the flame is extinguished the temperature in the circulating loop will immediately drop as its lower end is connected with the coolest portion of the Water system.

A suitable thermostat may be arranged within'th-e loop 8 and the pipe 10 is preferably provided with an extensionll from which an operating connector 12 from the thermostat extends to a control board 13. This thermostatic connector is adapted to cut out the electric current being supplied to the electric motor for driving the fuel supply mechanism or to otherwise arrest the fuel supply, consequently when the flame is extinguished the thermostat operates to arrest the operation of the burner and discontinues the supply of fuel. Suitable manually operable means is provided for enabling the starting of the-fuel supply.

This system of control is extremely simple and maintains a condition of thermostat control which will be very constant as the heat temperature of the water in the main system and at a temperature which will maintain the operation of the fuel supply butupon the flame being extinguished the temperature in the conduit will immediately be reduced to a point which will cause the operation of the thermostatic device. The pipe arranged in the path of the flame will be adequatelyprotected against burning by the constant flow of fluid therethrough.

What I claim as my invention is 1. A thermostatic control for oil burners, comprising, a burner, a main reservoir, a conduit independent of the circulating system of said reservoir and leading from a low point of said reservoir and returning to a high point and passing contiguous to the flame of the burner,'and a thermostatic device controlled by the temperature of the ing in. said conduit adapted to out suppiy in the burner in the 2.8 flame Ming extinguished.

thermostatic control for oil burners, we combination "with u boiler and o bis-me; *iirecaifiimti11;; said boiioiof a tube from the lower portion of said boiioi: independent of the boiler simulating system and amassing mmtiguous io'iho path of ihe iinmo of the burner and extending upwardly to the boiiod (Joachiming iilfilfiilltvab zi poi ii, above the level 01' its supply, ithormostot arranged in said tube and; a fihormostai; opomtod member controll ed b on fizhe thermos-mt affected is he temporallya oi the fluid flowing through said tube adapted to shut off the fiow of fuel to the burner following the extinction of the flame.

3. In a thermostatio control for oil burn- 62's, the combination with a boiier and a Inn-nor f0: heating the samo of a conduifi commcfied with said boiler and adapted, to circulate o. portion of the. fluid contained in said boile' independent of the-boiler cir- .cuiai;ion, said conduit being maintained at a high temporaturo by said burner, and thormosio'iio means responding to a drop in the nminiained temperature of said coniuit for cuiting oi? the gupply of 1191 to said burner. w 7

'WILLIAM SHUKE. 

